ForEach-Object for iteration in PowerShell - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print each number in the list using ForEach-Object.

PowerShell

1, 2, 3, 4, 5 | ForEach-Object [1] { Write-Output $_ }

Drag options to blanks, or click blank then click option'

A-ScriptBlock

B-Process

C-FilterScript

D-InputObject

Attempts:

3 left

💡 Hint

Common Mistakes

Using -InputObject instead of -Process causes errors.

Trying to use -FilterScript which is not a valid parameter.

The -Process parameter is used with ForEach-Object to specify the script block to run for each item.

2fill in blank

medium

Complete the code to multiply each number by 2 and output the result.

PowerShell

1, 2, 3 | ForEach-Object -Process { $_ [1] 2 }

Drag options to blanks, or click blank then click option'

A+

B/

C-

D*

Attempts:

3 left

💡 Hint

Common Mistakes

Using + adds 2 instead of multiplying.

Using / divides the number.

The * operator multiplies each number by 2.

3fill in blank

hard

Fix the error in the code to correctly output each item in uppercase.

PowerShell

'apple', 'banana', 'cherry' | ForEach-Object -Process { $_.[1]() }

Drag options to blanks, or click blank then click option'

AUpperCase

Btoupper

CToUpper

DtoUpperCase

Attempts:

3 left

💡 Hint

Common Mistakes

Using lowercase method names causes errors.

Using JavaScript style method names like toUpperCase.

The correct method name in PowerShell to convert a string to uppercase is ToUpper().

4fill in blank

hard

Fill both blanks to filter numbers greater than 3 and square them.

PowerShell

1, 2, 3, 4, 5 | Where-Object { $_ [1] 3 } | ForEach-Object -Process { $_ [2] $_ }

Drag options to blanks, or click blank then click option'

A>

B<

C*

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using < filters numbers less than 3, which is wrong here.

Using + adds numbers instead of squaring.

Use > to filter numbers greater than 3, and * to square each number.

5fill in blank

hard

Fill all three blanks to create a hashtable $h of words and their lengths for words longer than 4 letters.

PowerShell

$h = @{}; 'apple', 'bat', 'carrot', 'dog' | ForEach-Object { if ( $_.Length [1] 4 ) { $h[[2]] = $_.[3] } }

Drag options to blanks, or click blank then click option'

A-gt

B$_

CLength

Dlength

Attempts:

3 left

💡 Hint

Common Mistakes

Using -lt filters short words instead.

Using a literal instead of $_ for the key.

Using lowercase 'length' which does not match the Length property.

Use -gt to check greater than 4, $_ as the key (the word), and Length as the property for the value (length).